Mosit Buttery Vanilla Cake

I found this one on a forum....I'm doing a test run for a birthday cake I'm helping a friend put together.

Ingredients 

250g butter, softened
3 teaspoons vanilla essence
1-1/2 cups (330g) caster sugar
3 eggs
1-3/4 cups (260g) self-raising flour
1/3 cup (50g) plain flour
3/4 cup (180 ml) Plain Greek yoghurt
Delicious Frosting

1. Preheat oven to moderately slow (160C/140C fan-forced).
2. Grease a deep 20 cm cake tin, line base and sides of with baking paper. Make sure it comes up higher than tin by about 5cm
3. Beat the butter, extract and sugar in a large bowl with an electric mixer until light and fluffy
4. Add eggs one at a time, beating until just combined between additions.
5. Fold in combined sifted flours and yoghurt in two batches. Spread mixture into prepared cake tin.
6. Bake for about 1 hour and 10 minutes or until skewer comes out clean when tested.
7. Leave in tin for 5 minutes before inverting onto a wire rack for cooling.

Options:
You could add a cup of finely chopped strawberries - yum!